1)be made in different iron, grey and ductile casting iron 2)various shapes and dimmention 3)under much more pressure We are the manufacturer of cast iron manhloe covers and cast iron grates,we can produce it according with your demand 1)The manhole cover can be made by different standards of iron,with grey and ductile casting iron, 2)various shapes and dimmentions are decided by you3)under much ...
